28 February 1954 SEDRADUZ FOR RECORD SUBJECT: - 3B-1,l100N Coomand Briefing 1. | Persons present at the B-1, LOOM Comzand Briefing weres | Major General Clarkson Dr. Graves Brigadier General McGinley Rear ddoiral Bruton ‘ lr. Reeves ° i> e Gibbons Colonel Cowart Lt. Colonel Harbour Lt. Commander Leddea ’ che briefing wes conducted by: It. Colcnel Bonnot Captain Meynesd, USY It. Colonel House 2. The 270000Z February Teather Distribution Chart, with the 2703002 February streamline - superimposed thereon wes used for the present situa~ { tion briefing. The undersigned menticned the frontal system funnel jast below tiake, the deep trough associated with it which was reflected through all levels to 60,000 feet; the present high aloft to the east of Bikini which was also remaining rather stationary. The undersigned further asntioned the easterly flow from the surface to 10,000 feet; the south ezsterly becoming southerly and south westerly below aloft associated with this deep high east of Bikini. Next presented at the briefing was the forecast for shot time: 3/8 cumlus bases 2,000 feet, top 5,000 feets 3/8 cirrus 39,000 feet with widely scattered showers. The winis were given as per the attached forecest (Incl 1). Mentioned tropopause as.. 55,000 feet clso attached is the area forecast valid 280300K February to 010300M Merch (Incl 2). The undersiged described the air particle tre= jectory forecast stating that all of te trajectories were to the FZ ex cept the 10,000 feet one and the 60,000 ones which were westerly. 3. Colcnel House et this point continued with the Radsafe pertion of the briefing. 7 2 Inels a. “ind forecast db. arez forecest QoL 5 bere Of It Colonel, USAF Steff weather Officer } : -— : }

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